Evaluation of Ventilation Effectiveness in the Kitchens of Beijing Flats

Nong, Gang; Shen, Shubao; Tian, Chen

doi:10.1177/1420326x9600500609

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…Liu investigated 400 residential kitchens and found that only 4.8% of them contained gaseous pollutants at levels below the stipulated limits. Similarly, Nong et al measured CO and NO 2 concentrations in four flats in Beijing and found that the CO concentration exceeded the national standard limits by 31.7%‐211.6%, and NO 2 by 315.5%‐1342.4%. Meanwhile, Huang et al measured CO and CO 2 concentrations in two dwellings in Hong Kong.…”

Section: Indoor Air Quality In Crksmentioning

confidence: 99%

Indoor thermal environment and air quality in Chinese‐style residential kitchens

et al. 2020

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This paper reviews the published literature on indoor thermal environment and air quality in Chinese‐style residential kitchens (CRKs). The paper first discusses typical characteristics of CRKs, including kitchen layout, cooking methods, and ventilation systems used. Next, the paper describes the current state of the indoor thermal environment and air quality in CRKs. Finally, this paper summarizes measures to control and improve the environment inside CRKs. The results indicate that the indoor environment of CRKs is too hot in summer and exhibits a large vertical temperature difference. No appropriate model was available for accurately evaluating the thermal environment in CRKs. At the same time, CRKs are highly polluted by COx, NOx, TVOC, and particulate matter (PM). Although existing exhaust hoods could improve the indoor environment to some extent, the use of a combined exhaust, make‐up air, and air‐conditioning system should be considered to provide a comfortable and healthy environment in CRKs.

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Section: Indoor Air Quality In Crksmentioning

confidence: 99%

Indoor thermal environment and air quality in Chinese‐style residential kitchens

et al. 2020

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“…6,25–37 Nong et al. 38 studied experimentally the effects of different kinds of room ventilation in an experimental chamber and kitchens of four residences using a carbon monoxide tracer gas. By studying natural and mechanical ventilations, they concluded that a kitchen range hood associated with an extra fan was the most effective way for controlling IAQ in the kitchen.…”

Section: Introductionmentioning

confidence: 99%

“…Since kitchens are generally the main source of pollutants in residential housings, a great deal of work has been focusing on assessment and improvement of kitchen ventilation. 6,[25][26][27][28][29][30][31][32][33][34][35][36][37] Nong et al 38 studied experimentally the effects of different kinds of room ventilation in an experimental chamber and kitchens of four residences using a carbon monoxide tracer gas. By studying natural and mechanical ventilations, they concluded that a kitchen range hood associated with an extra fan was the most effective way for controlling IAQ in the kitchen.…”

Section: Introductionmentioning

confidence: 99%

Effect of air flow rates on concurrent supply and exhaust kitchen ventilation system

Kim

2014

Indoor and Built Environment

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Concurrent supply and exhaust ventilation (CSEV) has been developed to effectively exhaust heat and contamination from the kitchen. The objective of this research was to investigate the performance variation of this system with respect to air flow rates. CSEV system can block the contaminated air from entering the inner space by supplying fresh air horizontally in the ceilings towards the hood where the overflowed contaminated gas tends to diffuse to inner part of the room. The system captures contaminated air in an area near the ceiling and this captured air is then exhausted through the ceiling outlet. For quantitative evaluation, heat and gas capture efficiencies were defined and calculated. Experiments were conducted to compute heat and gas capture efficiencies based on the temperature and SF6 concentration data that were measured at the exhaust locations. To find optimum operation conditions for a CSEV system, numerical analysis was carried out. The numerical results were in good agreement with the experimental values. Maximum differences between the two methods are 17% for hood system and 10% for CSEV. Both heat and gas capture efficiencies would increase as exhaust flow rate of the hood increases. However, the optimum supply flow rate of ceiling nozzle was found to be 100 m3/h for maximum efficiency. This optimum flow rate condition would improve removing heat and contamination from the kitchen for better indoor air quality.

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“…The purpose of ventilation is to remove or dilute the indoor air pollutants (VOCs, HCHO, NO x , CO, CO 2 , moisture, microbes and odours), to establish a balance of fresh air and metabolic gases for occupants and to regulate the indoor thermal environment for the comfort of occupants. There are various literature providing reviews and assessment of the effectiveness of various types of ventilations for various types of buildings [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62]. To satisfy the requirement of the building regulations (or building codes) of various countries, mechanical ventilation with heat recovery is required and there are various reports regarding the effectiveness of such system in terms of improving IAQ of homes [63][64][65] and offices [66][67][68][69][70].…”

Section: Introductionmentioning

confidence: 99%

Low-Carbon Housings and Indoor Air Quality

Kim

2011

Indoor and Built Environment

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The purpose of this paper is to provide a review of the background information regarding low-carbon housings in the United Kingdom and to raise the concern of the possible high indoor pollution load due to the emissions from building materials and combustion products which would adversely affect the indoor air quality in air-tight buildings, especially homes. The standard guidelines given by the Building Regulations in the UK are reviewed especially in relation to mechanical ventilation with heat recovery systems. Also research literatures in relation to heat recovery ventilators and the use of air-cleaners from Korea, Hong Kong and China and from Europe are also included to illustrate the various possibilities to conserve energy and to achieve adequate ventilation with an improvement of indoor air quality. The effectiveness of using a heat recovery ventilator system and trickle ventilators in unoccupied super-energy-efficient test houses is illustrated by reviewing the long-term indoor volatile organic compound (VOC) concentrations in these test houses. The awareness of the issue is important for the future design and indoor air management of buildings, so as to provide adequate ventilation for living spaces without costing too much on energy efficiency.

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Evaluation of Ventilation Effectiveness in the Kitchens of Beijing Flats

Cited by 3 publications

References 6 publications

Indoor thermal environment and air quality in Chinese‐style residential kitchens

Indoor thermal environment and air quality in Chinese‐style residential kitchens

Effect of air flow rates on concurrent supply and exhaust kitchen ventilation system

Low-Carbon Housings and Indoor Air Quality

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